Centrifugal separator



R. s. BROWNLOW.

CENTRlFUGM SEPARATOR.

APPLICATION FILED FEB. 13, I919.

1,356,805. Patent-ed Oct. 26,1920.

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TENT OFFi CENTRIFUGAL sErAnATon.

To all whom it may concern: 1 V 7 Be it known that I, RICHARD SYDNEYBROWNLOW, a subject of the King of Great Britain and Ireland, and aresident of Manchester, in .the county of Lancaster, England, haveinvented certain new and useful 'Improvements in Centrifugal Separators,of

which the following is a specification.

This invention relates to centrifugal sepa- 10 rators. The invention isespecially applicable to apparatus for treating clay slip to obtain theclay suspended therein in a more or less plastic state, but it'isalsoapplicable to apparatus for separatingsolids vention is to provideimproved and simple means. for removing the separated solids or solidsubstance without stopping'the rotation of 'the drum. I V I I r 7According to theinvention, I provide the rotary drum of a centrifugalseparator with a removable lining which can, while the drum is rotating,be placed therein to rotate therewith and have the clay or. othermaterial deposited or accumulated upon its interior surface, and beremoved from' the drum, or be raised out of engagement therewith, toarrest its rotationand' allow of the ejection of the clay or other'material by 3 means of an annular or other disk, piston or the like orother appropriate means.

The invention is hereinafter further and more fully described withreference to the accompanying drawing, whereof Figure 1 is a more orless diagrammatic verticalsection of one embodiment of it, and Fig.'2 isan elevation at right angles to Fig. 1. Figs.

3, 4, 5, 6 and 7 are'similar views to Fig. '1! exemplifying furtherembodiments.

. 40 Referring first to Figs. 1 and 2, a is the rotary drum of anunder-driven centrifugal separator mounted on a shaft a carrying adriving pulley 03 Within the drum a is arranged a removable lining 6provided with a flange b which rests on the upper edge of the drum a sothat the lining rotates with the drum. Surrounding the drum 0. is aframe 0 comprising a ring 0 connected by rods 0 (mounted to slidein 5%guides 0 to a boss 0 loose on-the shaft 4& of the drum a. The boss 0is'provided with pins 0 which engage slots (Z in one arm of a foot-leverd. To place the lining b in the drum a the pedal of the foot-leverfa?'is depressed to raise the frame 0 and the lining is lowered,conveniently by overhead Specification of Letters Batent.

Application filed February 13,1919. Serial N0. 276,851.

from other liquids. The object of the'in- Patented Oct. 26,1920.

lifting tackle connected to eyes 6 provided on the flange 6 until itsflange b rests on the ring 0 The tackle is then disconnected and theframe 0 lowered by releasin the foot-lever until the flange 6 of thelining restsupon thedrum when the lining rotates The clay slip or thelike is then run into the drum and when the clay or other subwith thelatter by frictional engagement. 1

stance has accumulated or been deposited upon the interior surface ofthe lining b the supplyis cut off and the frame cgraised to lift vthelining "out of engagement with the drum and arrest its rotation.Thelining is then raised clear by the tackle aforesaid and may betraveled to some convenient situation for the removal of thedeposited oraccumulatedclayor other substance, 'another lining being placed in the;drum for the next operation. Other means than the frame 0. andfoot-lever d maybe employed V for raising and lowering the lining b.

The lining Z), may be made of material impervious or pervious to liquidsas desired,

and the efliuent liquidand also the liquid expelled from the deposit bycentrifugal force may be run off from the drum a in any 4 suitablemannerwh le the drum 1s rotating. I

In order to effect the discharge ofthe deposited or accumulated clayorother substance from the lining without completely removing the latterfrom the drum I may, as shown in Fig. 3 make the shaft a of the drum a"tubular and fit within the. lower part of the drum a piston e adapted-toslide inside of the lining b and furnished with, a

rod 6 which passes through the drum shaft a and whereby it isactuated.The shafte is screw-threaded and has mounted on it a worm-wheel m whichacts as a nut between upper and lower bearing members a, a through whichthe shaft 6 issplin'edso that it can slide therethrough butfinot rotate.With the worm-wheel m co-acts a worm 0 provided with an operatinghand-lever, 0

On the lining '5 being raised out of engage- 5 ment with the drum aby'the operationiof the foot-lever d, as before described, theaccumulated solids are ejected fromthe in.- terior surface of'the liningby actuating'the worm 0 so that the worm-wheel nut 41:,

travels the shaft e upward and raises the piston e. After the ejectionof the accumulated solids, the lining band piston el are lowered intonormal position fo th next operation. c r x 1: v a

I may, if desired, arrange for the consoli V dation of the deposited oraccumulated clay or other substance before the discharge of same fromthe lining by the piston e. T0 this end I nay, as shown in Fig. 4,arrange above the lining b an annular disk f which is normally retainedby swing bolts 7 so that the piston e on rising first consolidates theclay or other substance between itself and the disk I", after which thefastenings f are released and the disk 7 is removed or raised toallow'of the discharge of the con solidated clay or other substance.solidation may effected before'or after the lining Z) is raised. Insteadof employing swing bolts 7 to normally retain the disk 7, I mayemployany other appropriate securing means.

Instead of thepiston 6 being actuated from below, I may employ, as shownin Fig. 5, an annular disk 6 actuated fromabove by an annular disk 9 towhich it is connected by rods 9 and which normally rests upon the flangeb of the lining b, asshown. In such case, when the clay or othersubstance is consolidated before being ejected from the lining, the diskf, Fig. 4, will be arranged between the flange b and the disk g.

According to the modification exemplified in Fig. 6, I may employ asecond discharging piston or disk h of lesser eX- ternal diameter thanthe piston 'or disk e, and connected to an upper disk h by rods 70 whichpass through holes in the upper disk 9- whereupon the disk it rests, fordischarging the lesser separated or more dilute clay or other substancebefore discharging the more separated or-less dilute clay or othersubstance by means of the piston or disk 6.

According to the modification illustrated in Fig. 7, I may employ aplurality of discharging pistons or disks 6, j, is for discharging thedeposited or accumulated clay or other substance in sections accordingto the grading thereof axially of the drum.

' The disks 0, j and 7c are connected to the upper disks-g, j and byrods 9 1' and I0 which pass through the intervening disks. V 1 V -VVhatI claim as my invention and desire to secure by Letters Patent is 1. Ina centrifugal separator, the combination withthe rotary drum of theseparator, of alining loosely fitting therein and normally-rotatingtherewith and upon the interior surface ofwhich the separated solids aredeposited or accumulated, and means for operating said lining outof'andinto engagement with said drum while the latter is rotating. 1

2; In a centrifugal separator, the combination with the .rotary drum ofthe separator, of a lining loosely fitting in said drum and having aflange which: seats on drum and having a flange which seats-on the rimof the drum whereby the lining rator, of a lining loosely fitting insaid normally rotates therewith. and has the separated solids depositedor accumulated upon'its interior surface, a movable'frame' cooperativewith said flange, and means for actuating said frame to raise and lowerv said lining out of and into engagement with said drum while the latteris rotating. 4. In a centrifugal separator, the combination-with therotary drum of the sepa-- rator, of a lining loosely fitting in saiddrum and having a flangewhich seats on the rim of "the drum whereby thelining normallyrotates therewith and has the separated solids depositedor accumulated upon itsinterior surface, a movable frame 6 2 cooperativewith said flange, and. a-footactuated lever for operating said frame toraise and lower said lining outof and into engagement withsaid drumwhile the latter is rotating.

5. In a centrifugal separator, the combination, with the. rotary drum ofthe separator, of alining loosely fitting and normally rotatingtherewith and upon the interior .of whichv the separated solids aredeposited or accumulate, means for operating said lining into and outof-engagement with said drum while the latter is rotating, and means forremoving the solids from the liningwhen same is operated ou of enagement with said drum.

6. Ih a centrifugal separator, the combination with the rotary drum ofthe sepa rator, of a lining loosely fitting in said drum and normallyrotating ftherewith,

means for effecting relative axial movement between thedrum and lining,and a stripper within :the lining adapted to be positively moved axiallythereof, for the purpose described.

7 In a centrifugal separator, the combination with the rotary drum ofthe separator, ofa lining loosely fitting in said drum and normallyrotating therewith, means for effecting relative axial movement betweenthe drum and lining while the drum is rotating, a stripperplateextending-transversely across the lining, and means for positivelymoving said'plate axially of the lining.

I 8.In a centrifugal separator, the combif nation with the rotary drumof the separator, of a lining loosely fitting in said drum and normallyrotating therewith, means for efiecting relative axial movement betweenthe drum and lining, a stripper within the lining and adapted to g bemoved axially thereof, and means adjacent the mouth of the liningcooperating with said stripper for compacting material collected on theinner surface of the lining.

9. In a centrifugal separator, the combination with an open top rotarydrum, of a lining loosely supported in the drum by means engaging therim of the drum, whereby the lining normally rotates with the drum andwill have separated solids deposited or accumulated on its innersurface, and means for positively moving the lining vertically todisengage it from the drum while the latter is rotating.

10. In a centrifugal separator, the combination with an open top rotarydrum, of

a lining loosely supported in the drum by means engaging the rim of thedrum,

whereby the lining normally rotates with the drum and will haveseparated solids deposited or accumulated on its inner surface, meansfor positively moving the lining vertically to disengage it from thedrum while the latter is rotating, and means withinthe lining forstripping the accumulated material therefrom. V I I y In witness whereofI have hereunto set my hand.

RICHARD SYDNEY BROWNLOW.

